Search a number
-
+
1245001 is a prime number
BaseRepresentation
bin100101111111101001001
32100020211011
410233331021
5304320001
642403521
713403512
oct4577511
92306734
101245001
1178042a
125005a1
133478b4
14245a09
15198d51
hex12ff49

1245001 has 2 divisors, whose sum is σ = 1245002. Its totient is φ = 1245000.

The previous prime is 1244993. The next prime is 1245017. The reversal of 1245001 is 1005421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 855625 + 389376 = 925^2 + 624^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245001 - 23 = 1244993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1245091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622500 + 622501.

It is an arithmetic number, because the mean of its divisors is an integer number (622501).

21245001 is an apocalyptic number.

It is an amenable number.

1245001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245001 is an equidigital number, since it uses as much as digits as its factorization.

1245001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1245001 is about 1115.7961283317. The cubic root of 1245001 is about 107.5779423929.

The spelling of 1245001 in words is "one million, two hundred forty-five thousand, one".